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问题 单项选择题

对张力性气胸现场抢救，首先应

A．立即排气减压
B．闭式胸膜腔引流
C．人工呼吸
D．厚敷料加压包扎
E．闭式胸膜腔引流

答案

参考答案：A

解析：立即排气减压：危急时可用一粗针头在患侧第2肋间与锁骨中点连线处刺入。

单项选择题

Most plants can make their own food from sunlight, (1) some have discovered that stealing is an easier way to live. Thousands of plant species get by (2) photosynthesizing, and over 400 of these species seem to live by pilfering sugars from an underground (3) of fungi(真菌). But in (4) a handful of these plants has this modus operandi been traced to a relatively obscure fungus. To find out how (5) are (6) , mycologist Martin Bidartondo of the University of California at Berkeley and his team looked in their roots. What they found were (7) of a common type of fungus, so (8) that it is found in nearly 70 percent of all plants. The presence of this common fungus in these plants not only (9) at how they survive, says Bidartondo, but also suggests that many ordinary plants might prosper from a little looting, too.

Plants have (10) relations to get what they need to survive. Normal, (11) plants can make their own carbohydrates through photosynthesis, but they still need minerals. Most plants have (12) a symbiotic relationship with a (13) network of what are called my corrhizal fungi, which lies beneath the forest (14) . The fungi help green plants absorb minerals through their roots, and (15) , the plants normally (16) the fungi with sugars, or carbon with a number of plants sharing the same fungal web, it was perhaps (17) that a few cheaters—dubbed epiparasites—would evolve to beat the system. (18) , these plants reversed the flow of carbon, (19) it into their roots from the fungi (20) releasing it as "payment.\

7（）

A.evidences

B.pictures

C.traces

D.tracks
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多项选择题

人体研究护理伦理的考虑重点有（）。

A.知情同意原则

B.隐私保密原则

C.避免伤害原则

D.以人为本原则

E.公平原则
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